TOTALFLOW 4" inch diesel straight through performance exhaust mufflers constructed with 409 stainless steel, our race exhaust mufflers designed to allow for maximum free flow—and horsepower. Whether you have a true dual exhaust system or not, our mufflers will make you master the flow & the sound of your exhaust system giving you the max dyno results. Our bullet race exhaust mufflers, resonators and glasspacks & can be a great addition to your on road super custom project. TOTALFLOW mufflers feature a straight through, perforated 409 stainless steel core wrapped with stainless steel mesh acoustic material, making it the ideal mufflers for your next custom exhaust project, allowing for a free flow through the pipe with very little restriction.
Made from Heavy Gauge 409 stainless steel.
Free flow muffler, straight through perforated stainless steel core wrapped with stainless steel mesh to enhances sound, exhaust flow & improves performance.
Minimal decibel reduction over open headers for deeper & more Aggressive Sound.
Perfect for any custom exhaust project or muffler upgrade.
Fully Welded Case.
Universal Fitment Compact size muffler - will fit anywhere.
Use the following discount code for 0% off your next purchase!
Featured Reviews
TOTALFLOW Verified Customer
04/10/2021
Put a pair on my small block chevy to reduce noise enough to meet sound requirements for racing. Got rid of the crackle and rasp i had with dynomax mini bullets. Good quality, would be nice if the outlet was expanded to slip fit.
TOTALFLOW Verified Customer
02/17/2020
I used this on my diesel tuck just to mellow the rasp out a little bit. It did that and gave it a deeper tone over just being straight piped, but didn't sacrifice the overall sound. If you plan on welding this in take the extra time to clean the ends since there is an oily residue on the metal.
TOTALFLOW Verified Customer
01/29/2020
Good quality muffler for the money. I only wish I had bought a slightly longer one.
TOTALFLOW Verified Customer
01/11/2020
Very impressed. Took the rasp out of my turbo Ls straight pipe. Good quality muffler in and out.
TOTALFLOW Verified Customer
01/02/2020
Working well
TOTALFLOW Verified Customer
12/12/2019
Came fast and easy to install I put it on my Ford F800 diesel, was straight piped and this quieted it down a fair amount. Sounds great.
TOTALFLOW Verified Customer
11/04/2019
Does the job. I'd give it more stars if it were a slip fit over the pipe like 99% of the other resonators & mufflers on the market. This one must be butt welded in or have your pipe expanded.
TOTALFLOW Verified Customer
11/02/2019
Just what I needed
TOTALFLOW Verified Customer
11/02/2019
Small but works really good in tight spot, best if you use 2 mufflers probably not enough by itself
TOTALFLOW Verified Customer
09/29/2019
Havent installed yet but looks like very good quality.
TOTALFLOW Verified Customer
09/24/2019
Very nice muffler, great price and fitment. Definitely recommend.
TOTALFLOW Verified Customer
09/20/2019
Nice quality and a perfect fit for my application.
TOTALFLOW Verified Customer
09/13/2019
Used this on my 2004 F350 Powerstroke and it made a huge difference in the cab. I have been running a 4" straight pipe for years, but I'm getting to that age where I don't care for all the noise. Still have great sound outside, but now I can hear myself think when towing a heavy load. Very happy, highly recommend.